Replaced the internal sound eproms of the cheesy sounding machine from 1987. The new roms include 2*48 sounds of Classic drummachines like TR-707, TR-727, 909, Linndrum, DMX, RZ-1 etc. Still needs the overall pitch adjustment mod.

Thanks to Alex Erlewein for burning the eproms and the help!

more info here:

http://www.burnkit2600.com/hr-16/

http://www.vintagesynth.com/misc/hr16.php